Abstract:Farms and ranches can use anaerobic digesters also known as biodigesters to recover methane (biogas) from animal manure for producing electricity, heat, and hot water. Anaerobic digesters not only reduce energy costs but also methane emissions, which contribute to global warming. Here you can find the following information: How anaerobic digestion (methane recovery) works, anaerobic digester types and designs and the economics and benefits of anaerobic digesters.